Blockchain provides a platform for secure and reliable Internet of Things (IoT) transactions based on its commercially distributed and highly secure network architecture. Even though technology has been widely implemented, the bringer of new achievements, but blockchain technology still confronts numerous challenges, such as low throughput, high computational costs, and transaction fees. To deal with the scalability problem, some off-chain scaling solutions have been innovated as dominant alternatives, acting out new solutions, thus offering more percent efficiency and less expense. Past experience shows that payment hub systems, which were based on the central operator model, were susceptible to central operator failures (COF). Moreover, the previous approaches, which started the system by letting operators post USSCs to the blockchain, didn’t consider the possible state rollbacks, thus causing security flaws. Thus, ZK-Rollups implement validity proofs only to allow the correct state transitions to be Sha256 in this case so that there is no need to trust them, and thus, they can be eliminated. This paper aims to show how the ZK-Rollups can enhance the scalability of the blockchain by increasing the transaction throughput and on-chain costs. In detail, we significantly underline how ZK-Rollups exploit short cryptographic proofs to aggregate multiple transactions while sustaining decentralization and security. Moreover, we investigate the usage of cutting-edge recursive ZKPs for this purpose and the principle of instant transaction verification. The next steps for the research include the ZK circuits optimization, the decrease of proof generation time, and binding Layer 2 solutions with decentralized AI.